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CTL46x Series GPS Timing Modules
Ultra High Sensitivity Assisted GPS Technology Ultra high sensitivity assisted GPS technology
Product Overview The CTL46x Series GPS Timing Modules are designed for where a compact, low cost source of highly accurate time is required, in a very small form factor
DATASHEET
The CTL46x Series can be specified with the latest Chip Scale Atomic Clock (CSAC) from Microsemi for extended holdover, or with TCXO oscillators for reduced holdover and lower cost applications. The CTL46x Series are fitted with a multi-constellation GNSS receiver that can track GPS, GLONASS, GALILEO, BEIDOU and QZSS The CTL46x Series utilises the very latest GPS technology that allows ultra high sensitivity satellite tracking to levels as low as –160dBm, this low strength signal capability can enable GPS timing in very weak signal areas such as under dense foliage, in severe urban canyons and even inside buildings. The CTL46x Series provides 1pps and 10MHz output signals. Other features of the CTL46x Series includes the capability to perform a self survey and enter a fixed position mode of operation. This allows GPS timing with only one satellite being tracked as low as –160dBm thereby greatly extending the ability of the unit to output GPS steered time and reducing holdover requirements. In addition, the unit will autonomously scale the self survey window based on initial reported GPS position to allow entry into fixed position mode even in very weak signal areas.
GPS World from Chronos Technology CTLds134 r1.3 Jan 2017
CTL462 CSAC option
CTL46x Series GPS Timing Modules
Specification Physical Enclosure Size: Inputs Antenna: Antenna Power: Voltage: Power:
Outputs 1pps Serial Port: Data Output: GNSS Frequency:
48mm x 43mm x 15mm
U.FL Co-axial +5V filtered and current limited +5V DC 90mW for CTL460 (TCXO) 200mW for CTL462 (CSAC)
TTL UART NMEA0183 (including Time of Day)
Sensitivity: Sensitivity:
GPS, GALILEO, GLONASS, BEIDOU, QZSS, -159dBm acquisition (A-GPS) -160dBm tracking
Timing Accuracy 1pps: 1pps:
15ns RMS (clear view of sky) <1us (weak signal strength) (note 1)
Holdover Stability CTL460 with TCXO CTL462 with CSAC
5 x 10E-7 3 x 10E-11
Environmental Operating Temperature: Storage Temperature: Humidity:
-30degC to +70degC -40degC to +100degC 90% non-condensing
Compliance 6 of 6 RoHS Key Features
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Multi constellation GNSS receiver GPS disciplined CSAC oscillator TCXO option 1pps output 10MHz output +5V DC input voltage Ultra high GPS sensitivity 15ns RMS timing accuracy Achieves ITU/ETSI PRC MTIE mask Self survey and single satellite timing capability Low power Very small form factor
Part Numbers: CTL460 includes TCXO CTL462 includes CSAC
Note 1 With a clear view of the sky, the CTL46x series units will provide 15ns RMS timing accuracy. In areas of very weak GPS signals, the timing accuracy can degrade out to levels of <1us due to signal multipath. Such multipath will also degrade the short term frequency accuracy
© 2017 Chronos Technology. Specifications subject to change without notice.
Chronos Technology Limited Stowfield House Upper Stowfield Lydbrook Gloucestershire GL17 9PD UK Tel: +44 (0)1594 862200 Email:
[email protected] www.chronos.co.uk www.gps-world.biz
